[PATCH] i2c: Modify error handling

[Amitoj Kaur Chawla]

devm_gpiod_get returns an ERR_PTR on error so a null check is
incorrect and an IS_ERR check is required.

The Coccinelle semantic patch used to make this change is as follows:
@@
expression e;
statement S;
@@

  e = devm_gpiod_get(...);
 if(
-   !e
+   IS_ERR(e)
   )
  {
   ...
-  return ...;
+  return PTR_ERR(e);
  }

Signed-off-by: Amitoj Kaur Chawla <amitoj1...@gmail.com>
---
 drivers/media/i2c/adp1653.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/media/i2c/adp1653.c b/drivers/media/i2c/adp1653.c
index 7e9cbf7..54b355e 100644
--- a/drivers/media/i2c/adp1653.c
+++ b/drivers/media/i2c/adp1653.c
@@ -466,9 +466,9 @@ static int adp1653_of_init(struct i2c_client *client,
        of_node_put(child);
 
        pd->enable_gpio = devm_gpiod_get(&client->dev, "enable", GPIOD_OUT_LOW);
-       if (!pd->enable_gpio) {
+       if (IS_ERR(pd->enable_gpio)) {
                dev_err(&client->dev, "Error getting GPIO\n");
-               return -EINVAL;
+               return PTR_ERR(pd->enable_gpio);
        }
 
        return 0;
-- 
1.9.1